Species: ~ 16.
Geography: southern Ecuador, Peru, Bolivia.
- Espostoa baumannii Knize 1969 (Peru)
- Espostoa blossfeldiorum (Werdermann) Buxbaum 1959 (northern Peru)
= Cephalocereus blossfeldiorum Werdermann 1937
= Thrixanthoceresu blossfeldiorum (Werdermann) Backeberg 1937
= Facheiroa blossfeldiorum (Werdermann) Buxbaum 1957
- Espostoa clava F. Ritter 1981 (Amazonas, Peru)
- Espostoa frutescens J. E. Madson 1989 (Azuay, Ecuador)
- Espostoa guentheri (Kupper) Buxbaum 1959 (Bolivia)
= Cephalocereus guentheri Kupper 1931
= Vatricania guentheri (Kupper) Backeberg 1950
- Espostoa huanucoensis H. Johnson ex F. Ritter 1981 (Huánuco, Peru)
- Espostoa hylaea F. Ritter 1964 (Amazonas, Peru)
- Espostoa lanata (Knuth) Britton et Rose 1920 (Peru)
= Cactus lanatus Knuth 1823
= Cereus lanatus (Knuth) A. P. de Candolle 1828
= Pilocereus lanatus (Knuth) F. A. C. Weber 1898
= Cleistocactus lanatus (Knuth) F. A. C. Weber 1904
= Oreocereus lanatus (Knuth) Britton & Rose 1916
= Pilocereus dautwizii Haage 1837
= Cereus dautwizii (Haage) Orcutt 1902
= Espostoa dautwizii (Haage) Borg 1937
= Cereus sericatus Backeberg 1931
= Cereus lanatus subsp. sericatus (Backeberg) Werdermann 1937
= Espostoa sericatus (Backeberg) Backeberg 1935
= Espostoa laticornuta Rauh & Backeberg 1957
= Espostoa procera Rauh & Backeberg 1957
- Espostoa lanianuligera F. Ritter 1981 (Cajamarca, Peru)
- Espostoa melanostele (Vaupel) Borg 1937 (northern Peru, central Peru)
= Cephalocereus melanostele Vaupel 1913
= Binghamia melanostele (Vaupel) Britton & Rose 1920
= Pseudoespostoa melanostele (Vaupel) Backeberg 1934
= Pilocereus haagei Poselger ex Rümpler 1885
= Espostoa haagei (Poselger ex Rümpler) Borg 1937
- Espostoa mirabilis F. Ritter 1964 (middle Marañón Gorge, Peru)
- Espostoa nana F. Ritter 1964 (Ancash, Peru)
= Pseudoespostoa nana (F. Ritter) Backeberg 1966
- Espostoa ritteri Buining 1960 (Marañón, Peru)
- Espostoa ruficeps F. Ritter 1981 (Ancash, Peru)
- Espostoa senilis (F. Ritter) N. P. Taylor 1978 (Ancash, Peru)
= Trixanthocereus senislis F. Ritter 1961
= Trixanthocereus cullmannius F. Ritter 1961
= Trixanthocereus longispinus F. Ritter 1961
- Espostoa superba F. Ritter 1960 (Marañón, Peru)
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